CVE-2025-13558 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress. This plugin facilitates automated social media posting and scheduling, widely used by organizations to manage social media content. The vulnerability exists due to the absence of a proper capability check in the 'deleteUserCcDraftPost' function, which is responsible for deleting draft posts created by users. Because of this missing authorization, any authenticated user with at least Subscriber-level privileges can invoke this function to change the status of arbitrary posts to 'trash', effectively deleting them from the WordPress site. This flaw does not require elevated privileges beyond Subscriber, nor does it require user interaction, making it relatively easy to exploit remotely. The vulnerability affects all versions up to and including 8.7.0 of the plugin. The CVSS v3.1 base score is 5.4, indicating a medium severity level, with attack vector being network, low attack complexity, privileges required being low, no user interaction, and impact on integrity and availability but not confidentiality. Although no public exploits or active exploitation in the wild have been reported, the vulnerability poses a significant risk to content integrity and availability on affected WordPress sites. The lack of patch links suggests that a fix may not yet be publicly available, emphasizing the need for mitigation through access control or plugin updates once released.

The primary impact of CVE-2025-13558 is unauthorized modification and deletion of WordPress posts managed via the Blog2Social plugin. Attackers with minimal privileges (Subscriber-level) can trash arbitrary posts, leading to potential loss of critical content, disruption of social media marketing workflows, and reputational damage. This can affect organizations relying heavily on WordPress for content management and social media automation, including businesses, media outlets, and bloggers. The integrity of published content is compromised, and availability is reduced as posts may be removed without proper authorization. Although confidentiality is not impacted, the ability to delete content can cause operational disruptions and require significant recovery efforts. The vulnerability could be exploited by insider threats or external attackers who have gained low-level access, potentially escalating damage within the environment. The absence of known exploits in the wild currently limits immediate widespread damage, but the ease of exploitation and broad user base of WordPress plugins make this a notable risk.

Organizations should immediately audit user roles and permissions within their WordPress environments to ensure that Subscriber-level users are restricted and monitored. Until an official patch is released, consider disabling or uninstalling the Blog2Social plugin if it is not critical to operations. If the plugin is essential, restrict access to trusted users only and implement additional monitoring for suspicious post status changes. Employ WordPress security plugins that can log and alert on unauthorized content modifications. Regularly back up WordPress content and databases to enable quick restoration of deleted posts. Stay informed about updates from the plugin vendor and apply patches promptly once available. Additionally, consider implementing web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the vulnerable function. Educate users about the risks of privilege escalation and enforce strong authentication mechanisms to reduce the risk of unauthorized access.